Axis ETRAX FS General I/O

modulename: gpio-etraxfs.ko

configname: CONFIG_GPIO_ETRAXFS

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Memory mapped GPIO drivers
└─>Axis ETRAX FS General I/O
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.

source code: